公开(公告)号：IE20010561A1

公开(公告)日：2001-12-28

申请号：IE20010561

申请日：2001-06-13

Applicant: FORFAS

Inventor： WILLERS MICHAEL ,  EGAN MICHAEL ,  O'SULLIVAN DARA

IPC: H02M1/00 ,  H02M1/42 ,  H02M7/02

Abstract: An ac/dc converter (1) has a closed loop controller (3) to maintain a well regulated output voltage (Vo) with low peak-to-peak ripple. A resonant capacitor (Cin) across the rectifier bridge (DR1-DR4), and a resonant inductor (LR) between the bridge and the isolation transformer provide inherent power factor correction. A clamping diode (Dcl) is connected between the dc rectifier bridge positive terminal and the bulk capacitor (CB). There is also a second resonant capacitor (Ct) across the isolation transformer. There is zero voltage switching of the power switches (Q1, Q2)